A.B.C's periodontics--"O" is for Occlusal adjustment.
Swenson
H M
HM
Indiana University School of Dentistry.
D003767:Dental Occlusion, Balanced; D003769:Dental Occlusion, Traumatic / Q000209:etiology / Q000628:therapy*; D006801:Humans; D010510:Periodontal Diseases / Q000150:complications; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000628:therapy